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Cheap flights from Seattle to Ireland from €238

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 28/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Seattle to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
Lufthansa Logo
10:42 - 07:30
SEA
-
SNN
12h 48m
1 stop
Lufthansa Logo
12:30 - 21:55
SNN
-
SEA
17h 25m
1 stop
€661Lufthansa
Wed, 9 Sep - Tue, 13 Oct
United Airlines Logo
08:30 - 10:15
SEA
-
SNN
17h 45m
2 stops
United Airlines Logo
12:30 - 21:55
SNN
-
SEA
17h 25m
1 stop
€661United Airlines
Tue, 6 Oct - Wed, 14 Oct
Lufthansa Logo
05:00 - 07:30
SEA
-
SNN
18h 30m
2 stops
Lufthansa Logo
12:30 - 21:15
SNN
-
SEA
16h 45m
2 stops
€665Lufthansa
Wed, 9 Sep - Tue, 13 Oct
United Airlines Logo
07:00 - 10:15
SEA
-
SNN
19h 15m
2 stops
United Airlines Logo
12:30 - 22:56
SNN
-
SEA
18h 26m
2 stops
€666United Airlines
Tue, 6 Oct - Wed, 14 Oct
Delta Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
Delta Logo
13:05 - 20:20
SNN
-
SEA
15h 15m
1 stop
€713Delta
Tue, 4 Aug - Tue, 25 Aug
Delta Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
Delta Logo
13:05 - 20:28
SNN
-
SEA
15h 23m
1 stop
€728Delta
Sun, 12 Jul - Fri, 31 Jul
KLM Logo
13:30 - 14:40
SEA
-
ORK
17h 10m
1 stop
KLM Logo
15:40 - 11:25
ORK
-
SEA
27h 45m
1 stop
€760KLM
Tue, 20 Oct - Mon, 2 Nov
Scandinavian Airlines Logo
15:55 - 09:25
SEA
-
DUB
33h 30m
1 stop
Scandinavian Airlines Logo
19:50 - 13:45
DUB
-
SEA
25h 55m
2 stops
€783Scandinavian Airlines
Fri, 14 Aug - Fri, 21 Aug
Aer Lingus Logo
19:10 - 12:15
SEA
-
DUB
9h 05mdirect
Aer Lingus Logo
15:25 - 17:10
DUB
-
SEA
9h 45mdirect
€786Aer Lingus
Fri, 4 Sep - Thu, 10 Sep
KLM Logo
13:30 - 14:40
SEA
-
ORK
17h 10m
1 stop
KLM Logo
05:45 - 16:35
ORK
-
SEA
18h 50m
2 stops
€795KLM
Tue, 20 Oct - Mon, 2 Nov

JetBlue flights from Seattle to Ireland

Our best JetBlue deals on Seattle to Ireland flight tickets
JetBlue
29 Aug
SEA23:44Seattle/Tacoma Intl
24h 36m
1 stop
DUB08:20Dublin
6 Sept
DUB10:40Dublin
20h 09m
1 stop
SEA22:49Seattle/Tacoma Intl
€790
JetBlue
19 Aug
SEA11:45Seattle/Tacoma Intl
12h 35m
1 stop
DUB08:20Dublin
4 Sept
DUB11:30Dublin
17h 34m
1 stop
SEA21:04Seattle/Tacoma Intl
€804
JetBlue
20 Aug
SEA11:45Seattle/Tacoma Intl
12h 35m
1 stop
DUB08:20Dublin
28 Aug
DUB10:40Dublin
20h 09m
1 stop
SEA22:49Seattle/Tacoma Intl
€819

Aer Lingus flights from Seattle to Ireland

Our best Aer Lingus deals on Seattle to Ireland flight tickets
Aer Lingus
4 Sept
SEA19:10Seattle/Tacoma Intl
9h 05m
DUB12:15Dublin
10 Sept
DUB15:25Dublin
9h 45m
SEA17:10Seattle/Tacoma Intl
€786
Aer Lingus
2 Sept
SEA19:10Seattle/Tacoma Intl
9h 10m
DUB12:20Dublin
15 Sept
DUB15:25Dublin
9h 45m
SEA17:10Seattle/Tacoma Intl
€799
Aer Lingus
19 Jul
SEA19:10Seattle/Tacoma Intl
17h 25m
2 stops
SNN20:35Shannon
29 Jul
SNN07:30Shannon
17h 40m
2 stops
SEA17:10Seattle/Tacoma Intl
€820

momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 2 June 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 9/9

10:42-07:30

1 stop12h 48m

Shannon

Tue 13/10

12:30-21:55

1 stop17h 25m

€661

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 6/10

08:30-10:15

2 stops17h 45m

Shannon

Wed 14/10

12:30-21:55

1 stop17h 25m

€661

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 9/9

05:00-07:30

2 stops18h 30m

Shannon

Tue 13/10

12:30-21:15

2 stops16h 45m

€665

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 6/10

07:00-10:15

2 stops19h 15m

Shannon

Wed 14/10

12:30-22:56

2 stops18h 26m

€666

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/8

07:15-11:10

1 stop19h 55m

Shannon

Tue 25/8

13:05-20:20

1 stop15h 15m

€713

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 12/7

07:15-11:10

1 stop19h 55m

Shannon

Fri 31/7

13:05-20:28

1 stop15h 23m

€728

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Tue 20/10

13:30-14:40

1 stop17h 10m

Cork

Mon 2/11

15:40-11:25

1 stop27h 45m

€760

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 14/8

15:55-09:25

1 stop33h 30m

Dublin

Fri 21/8

19:50-13:45

2 stops25h 55m

€783
Fastest return journey

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 4/9

19:10-12:15

Nonstop9h 05m

Dublin

Thu 10/9

15:25-17:10

Nonstop9h 45m

€786

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Tue 20/10

13:30-14:40

1 stop17h 10m

Cork

Mon 2/11

05:45-16:35

2 stops18h 50m

€795

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Seattle to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

The month of November is another great option to travel to Ireland, with average flight prices from Seattle averaging around €258.

What is the cheapest Seattle/Tacoma Intl to Ireland flight route?

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Ireland flight prices

How far in advance should I book a flight from Seattle to Ireland?

You are more likely to see cheaper flights to Ireland from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €536 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as €422 on momondo.

What cabin class options are available on Seattle to Ireland flights?

There is only 1 cabin class available to choose from on Seattle to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Ireland flights?

No. A direct flight is the cheapest option for a flight between Seattle to Ireland.

Cheap Seattle to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Ireland

Best price found

€1,001

Fastest flight time

9h 05m

Direct flights

Every day

Airports in Ireland

77 airports
The best flight deal from Seattle to Ireland found on momondo in the last 72 hours is €1,001
The fastest flight from Seattle to Ireland takes 9h 05m
Direct flights go from Seattle to Ireland every day.
There are 77 airports in Ireland. From Seattle there are direct flights to Dublin (DUB).
Search flight deals

Frequently asked questions about flying from Seattle to Ireland

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ireland?

    Prices for flights from Seattle/Tacoma Intl Airport to Ireland are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Ireland?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Ireland for you.

Can I find flights from Seattle to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Ireland?

momondo helps you find the best flight between Seattle and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Ireland from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €39
Flights to Corkfrom €84
Flights to Shannon, Clarefrom €90
Flights to Milltown (Kerry)from €36
Flights to Donegalfrom €83